Airtel — Mental Harassment since 6 months

I have been using Airtel since 2014 and I did not face any issue up until recently but the issue faced makes me regret being their loyal customer for the last 8years. Since Jan, 2022 till now which is June 2022, I have had data connectivity issue thrice. I have changed my Sim card in on May 24th for the same. This is happening because in December 2021, my husband added me to a family plan and their system is so glitched that the app randomly puts a cap on the child number (yes, child as they do not have any other type of number). So this first happened when I was in Bangalore on New Years eve and it continued for 2weeks. Airtel thinks I pay the postpaid amount to talk to their customer care team because I have nothing to do in life. After 2weeks my bill cycle renewed and then my data started working so I gave them a second chance. It happened again in May and I change the SIM and now it's happened again from 9th of June and I am stuck in the same issue that I faced in January.
So the only solution that I see is to port my number which I can't because I am in the family plan. Now, I tried 1000's of time to remove myself from the family plan and spoke to 100's of executive but they couldn't and why? Because I have to go to Bombay for my address verification. Now I can't go to Bombay because my house is on rent and I don't have my parents. My tenants stay there but I have all other documents from Aadhar to Passport which I can show at any store near me and prove that it's me and that's my address but they don't approve of that either. I can't change my address until this verifies. I can't use data even though I paying for Airtel Black services. I don't even get priority as a Airtel black member. And the team is very incompetent as they ask for 24hrs and even in 24hrs there is never any resolution. I have to keep following up. I am getting depressed due to this as I need data in my day to day life. I am a normal person who wants to go buy veggies and make cashless payments, navigate to a certain place using my Google maps. I don't want to spend my day talking to customer support when I can get some work done and earn money for my daily bread and butter. This has become mentally frustrating and I want to sue the company. I have the recordings from January issue and this ongoing issue with me. I want to sue Airtel for Mental harassment because they are not even letting me stay nor letting me go. I feel stuck.